JPH03163469A - Document supplying and ejecting device for copying machine - Google Patents

Abstract

PURPOSE:To easily take out a jammed document without damaging it by obtaining such structure that a document conducting roller is automatically retreated from the jammed document by a spring for separation by rotating a main frame to a non-acting position when the document is jammed. CONSTITUTION:A copying machine housing 2 is provided with a document supplying and ejecting device 4, which is constituted of a still supporting frame 10 and the main frame 12 for feeding the document with the frame 10. The main frame 12 is mounted so that it can freely rotate between an acting position and the non-acting position for opening it to process the document which is jammed in a document feeding path, and the upstream side and the downstream side document conducting rollers 188 and 190 are movably provided at the acting and the non-acting positions for the document in the main frame 12. When the document is jammed and the main frame 12 is situated at the non- acting position, the rollers are automatically retreated from the jammed document to the non-acting position by the spring for separation. Thus, the jammed document is easily taken out without damaging it.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an original loading and unloading device for a copying machine, and more particularly, to a transparent plate disposed on the upper surface of a copying machine housing for transferring documents to be copied. The present invention relates to a document feeding and discharging device that feeds the document upward and then discharges the document from above a transparent plate.

[Prior Art] Japanese Utility Model Publication No. 53-47961 discloses a typical example of a document feeding and discharging device for a copying machine. This document feeding and ejecting device is centered on an axis extending along one side edge of a transparent plate disposed on the top surface of the copying machine housing, and has an active position that covers the transparent plate and a non-active position that exposes the transparent plate. It has a main frame that is rotatably mounted between the main frame and the main frame.

When the main frame is positioned at the operating position, the main portion of the document conveyance path is defined between the lower surface of the main frame and the transparent plate. The document conveyance path further includes an introduction part located upstream of the main part and a curved lead-out part located downstream of the main part. A document conveyance mechanism for conveying the document through the document conveyance path is also provided, and the document conveyance mechanism includes at least one document guide roller mounted on the main frame.

[Problems with conventional technology]

In the above-described conventional document feeding and ejecting device, when a document is jammed in the main portion of the document transport path, the jammed document can be removed easily by simply rotating the main frame to a non-operating position. It is possible to take out the document, but if the document jams at the curved lead-out part of the document transport path,
Because the document guide roller is acting on the jammed document and presses the document against the endless conveyor belt, opposing rollers, or opposing plate, it is extremely difficult to remove the jammed document without damaging it. .

[Problem of invention]

The present invention has been made in view of the above facts, and the seventh main technical problem is to simply rotate the main frame to a non-operating position even when a document jams at the curved lead-out portion of the document conveyance path. To provide an improved document feeding and discharging device which can easily take out a jammed document without damaging it.

[Means for solving the invention]

The gist of the solution of the present invention for achieving the above-mentioned technical problem is to move the document transport roller between an operating position where it acts on the document passing through the lead-out portion of the document transport path and a non-working position where it is retreated from the operating position. The pressing spring member elastically biases the document leading roller to the working position when the main frame is in the working position, and the pressing spring member elastically biases the document leading roller to the working position when the main frame is in the working position. A spacing spring member is provided that is resiliently biased into an active position.

That is, according to the present invention, centering on the pongee line extending along one side edge of the transparent plate disposed on the upper surface of the copying machine housing, there are an operating position that covers the transparent plate and a non-contact position that exposes the transparent plate. a main frame mounted so as to be rotatable between the main frame and the operating position; and a main part defined between the lower surface of the main frame and the transparent plate when the main frame is positioned at the operating position. , a document conveyance path having an introduction part located upstream of the main part and a curved lead-out part located downstream of the main part, and at least one document lead-out roller disposed on the main frame. , a document transport mechanism for transporting the document through the document transport path, and an original document feeding and ejecting device comprising: a document transport mechanism for transporting the document through the document transport path; and a non-working position retracted from the working position, and the document transport mechanism further moves the document guiding roller to the working position when the main frame is in the working position. It is characterized by comprising: a pressing spring member that is elastically biased; and a separating spring member that elastically biases the document guiding roller to the non-coughing position when the main frame is placed in the non-working position. A document feeding and ejecting device is provided.

[Action of the invention]

In the original stack feeding and discharging device of the present invention, when a document jams at the lead-out portion of the document conveyance path, the main frame body is rotated to a non-operating position. In this way, the original guide roller is brought to the non-operating position by the elastic biasing action of the spacing spring member and automatically retreats from the jammed original, so that the jammed original can be taken out sufficiently easily without being damaged.

[Preferred specific examples of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in further detail to the accompanying drawings, which illustrate an electrostatographic copying machine having one embodiment of a bulk feed and ejection apparatus constructed in accordance with the present invention.

Referring to FIGS. 1 and 2, a copying machine housing 2 of an electrostatic copying machine, which may be of a form well known per se, will be described.
The upper side is equipped with a bulk feed and ejection device, generally indicated by the number 4, and furthermore, in the illustrated embodiment, a document holding mechanism 6, which may be of a type known per se.

The document feeding and ejecting device 4 in the illustrated example is a transparent plate 8 (FIG. 3) disposed on the upper surface of the copying machine housing 2.
The stationary support frame 10 attached to the upper surface of the copying machine housing 2 adjacent to one side edge and the active position (i.e., the first 1) and an inactive position exposing the transparent plate 8 (for example, as shown in FIG. 2, which is rotated approximately 90 degrees clockwise when viewed from the lower right in FIGS. 1 and 2 from the operative position). The main frame body 12 is equipped with a movable main frame body 12 that is mounted so as to be able to freely rotate between the two positions. On the other hand, the document holding mechanism 6 is
The transparent plate 8 is centered on an axis extending along the other side edge of the transparent plate 8, which extends substantially at right angles to the pivot axis of the main frame 12 at the document feeding and ejection position 4.
an active position (i.e., the position shown in FIG. 2) that covers the transparent plate 8, and a non-active position that exposes the transparent plate 8 (for example, the first
It is mounted so that it can freely rotate between the position shown in FIG. 1, which is rotated approximately 90 degrees when viewed from the upper right in FIG. As will be explained in detail later, when positioning a document to be copied on the transparent plate 8 using the original stack feeding and discharging device 4, as shown in FIG. The main frame 12 of the document feeding and ejecting device 4 is placed in the operating position. On the other hand, when the original to be copied is positioned on the transparent plate 8 by manual manipulation without using the original loading and ejecting device 4 (for example, when the original to be copied is thick like a book, or made of cardboard or a metal plate) (if it has relatively high rigidity)
As shown in FIG. 2, the main frame 12 of the document feeding and ejecting device 4 is placed in the non-operating position, the document is then placed at a desired position on the transparent plate 8, and then the document holding device is moved. 16
is rotated to the above operating position, and the transparent plate 8 and the document placed thereon are covered by the document holding mechanism 6.

When taking out the original after the copying process is completed, press the original holding mechanism 6.
swivel to the non-operating position.

Hereinafter, the configuration of the illustrated document feeding and ejecting device 4 configured according to the present invention will be described in detail.

To explain with reference to FIG. 3 together with FIGS. 1 and 2,
As already mentioned, the illustrated document feeding and ejecting device 4 includes:
It includes a stationary support frame 10 and a movable main frame 12.

As understood from FIG. 3, the support frame 10 is attached to one end of the top surface of the copier housing 2 (in FIG. 3) adjacent to one side of the transparent plate 8 fixed to the top surface of the copier housing 2. (right end). And the main frame body 12
is rotatably attached to the support frame 10.

With reference to FIGS. 4 to 6 together with FIG. 3, the support frame 10
To explain how the main frame body 12 is attached to the support frame body 10, the support frame body 10 has a pair of upright walls 14 located at a predetermined distance in the width direction (that is, the direction perpendicular to the plane of the paper in FIG. 3).
a and 14b, such a pair of upright walls 14a and 1
The main shaft 18 is rotatably mounted between the shafts 4b and 4b by bearing members 16a and 16b. On the other hand, the main frame l2 has a pair of side plates 20a and 2 located at a predetermined interval in the width direction.
0b, and one end of the pair of side plates 20a and 20b is connected to the main shaft 1 via the bearing members 16a and 16b.
The main frame 12 is rotatably connected to the support frame 10 about the central axis of the main shaft 18 extending along one side edge of the transparent plate 8 . Then, between each of the pair of upright walls 14a and 14b of the support frame lO and each of the pair of side plates 20a and 20b of the main frame 12, the main frame 12 is placed in the operating position (i.e., in the first
The following mechanism is interposed for forcibly positioning and holding it in either the position shown in the figure) or the non-operating position (namely, the position shown in Figure 2). Mainly referring to FIG. 4, the pair of upright walls 14a and 14b of the support frame 10 are each formed with a short shaft portion 22 projecting outward in the lateral direction on the outer surface thereof. One end portion of a connecting arm 24 is rotatably connected to each of the shaft portions 22 . On the other hand, the pair of side plates 20 of the main frame 12
A pair of brackets 26 and 28 are fixed to the outer surfaces of each of a and 20b at intervals in the longitudinal direction, and a rod 3 extending between the brackets 26 and 28 is fixed to the outer surface of each of the brackets 26 and 20b.
0 is attached.

The rod 30 is attached to the brackets 26 and 28 as required, for example by threading a nut 32 onto male threads formed at each end thereof extending through holes formed in the brackets 26 and 28. It can be attached to. If desired, one of the two nuts 32 can be formed integrally with the rod 30. A block 34 is attached to the rod 30.
is slidably attached thereto, and a coil spring 36 is interposed between the block 34 and the bracket 26. On the other hand, a pin 38 projecting laterally outward is implanted in the free end of each of the above-mentioned connecting arms 24, and the pin 38 can be inserted into a corresponding recess formed in the block 34. The free end of the connecting arm 24 is pivotally connected to the block 34.

In the above-mentioned mechanism interposed between each of the pair of upright walls 14a and 14b of the support frame body 10 and each of the pair of side plates 20a and 20b of the main frame body 12, the main frame body 12 is When pivoted between the working position shown by the solid line in the figure and the non-working position shown by the two-dot chain line, the free end of the connecting arm 24 connects the pair of main frame members 12 via the pin 38, the block 34 and the rod 30. Because it is connected to the side plates 20a and 20b, the connecting arm 24 can also be pivoted between the position shown in solid lines in FIG. 4 and the position shown in two-dot chain lines. The pair of side plates 20a and 20b of the main frame body 12 pivot around the main axis l8, while the connecting arm 2
4 pivots around the short shaft portion 22, which is displaced upward and to the right in FIG. 4 with respect to the main shaft 18. Therefore, as can be easily understood from FIG. The distance between the block 34 and the block 34 whose position relative to the rod 30 is restrained by the free end of the connecting arm 24 is shortest when the main frame 12 is in the operating position shown by the solid line in FIG. It gradually increases in response to being turned toward the non-operating position shown by .

Therefore, the bracket 26 and block 3
The coil spring 36, which is interposed between the block 34 and the bracket 26 and acts in the direction of increasing the distance between the block 34 and the bracket 26, moves the main frame 12 from the operating position shown by the solid line in FIG. The elastic biasing force M in the direction of turning the main frame 12 toward the non-acting position shown in FIG.
2. Then, the elastic biasing force M. of the coil spring 36 is applied. is greatest when the main frame 12 is in the active position shown by the solid line in FIG. 4, and gradually decreases as it is rotated toward the non-active position. On the other hand, in addition to the above-mentioned elastic biasing force M exerted by the coil spring 36, the main frame 12 is also affected by the main frame 12 and various structural elements attached thereto (these will be mentioned later). Due to weight, the following forces also act: That is, as can be easily understood from FIG. 3, the weight W of the main frame 12 and the various structural elements attached thereto is equal to Moment in the counterclockwise direction in Figure 3 (counterclockwise when viewed from the lower right in Figure 4)} Ms = W
Xl is applied to the main frame 12. When the main frame 12 is rotated clockwise by an angle θ from the working position to the non-working position as shown in FIG.
=WXj! It decreases to Xcosθ. That is, as the main frame 12 is rotated clockwise in FIG. 3 from the working position to the non-working position, it gradually decreases. In the illustrated example, when the main frame 12 is in the operating position shown by solid lines in FIGS. 3 and 4, the main frame 12
The main frame body 12 in FIG. The above moment M2 due to the weight W acting in the direction of turning in the counterclockwise direction (counterclockwise when viewed from the lower right in Fig. 4) is larger
(M2 > Ml), when the main frame 12 is rotated clockwise in FIG. 3 (clockwise when viewed from the lower right in FIG. 4) from the working position to the non-working position, the elastic biasing force is The degree of decrease in the above moment M2' due to weight W is greater than the degree of decrease in M1,
When the main frame body 12 is turned from the working position to the non-working position by a predetermined angle θ2, which may be, for example, 50 to 60 degrees, Mr = M2 (=Wx 1 xcos θ,) and beyond this angle θ. When the main frame body 12 is further turned toward the non-operating position, it is set such that Ml>M.Because of this, the main frame body 12 is
The angle θ from the working position to the non-working position. When the coil is turned beyond this point, the coil is forced to the non-acting position by the elastic biasing force M+ (Ml >M2) by the spring 34.

Then, when the main frame body 12 is in the non-operating position shown by the two-dot chain line in FIG. This prevents the main frame 12 from further pivoting clockwise as viewed from the lower right in FIG. 4 beyond the non-operating position. On the other hand, when the main frame 12 is turned from the non-operating position to the operating position in the counterclockwise direction when viewed from the lower right in FIG. It is forcibly positioned and held in the operating position by M2 (M 2 > M + ).

Next, referring to FIGS. 1 to 3, the structure of the main frame l2 itself will be described. It has a plate 42 and a lower plate 44 disposed between the lower edges of the pair of side plates 20a and 20b. Top plate 42 defines a substantially flat document receiving surface 46 on the top surface of main frame 12 . This manuscript, receiving surface 46
As will be explained later, receives the document discharged from the main frame 12. On the upper surface of the upper plate 42 that defines the document receiving surface 46, there is a regulating member 48 that regulates the front edge of the document discharged onto the document receiving surface 46 and aligns the discharged document. It is preferable that it is fixed so that its position can be adjusted accordingly. The position of the regulating member 48 can be fixed to the upper surface of the upper plate 42 in a freely adjustable manner by, for example, forming at least a part of the regulating member 48 from a permanent magnet, and using the magnetic attraction force of the permanent magnet, any part of the upper surface of the upper plate 42 can be fixed. This can be achieved by, for example, fixing the regulating member 48 at this position. Main frame l
The lower plate 44 defining the lower surface of the transparent plate 2 is located somewhat above and substantially parallel to the transparent plate 8 when the main frame 12 is positioned in the operating position as shown in FIG. The main IS 52 of the document transport path 50 is defined between the main IS 52 and the upper surface of the document transport path 8 .

In addition to the main section 52, the document conveyance path 50 includes a main section! 52 , and a curved lead-out portion 56 that connects the main portion 52 to the document receiving surface 46 . In the illustrated example, the introduction portion 54 of the document transport path 50 is defined in the support frame 10, and the curved lead-out portion 56 of the document transport path 50 is located at the other end, that is, the free end (the free end) of the main frame 12. (left end in Figure 3).

Referring to FIG. 5, FIG. 6, and FIG. 7-A together with FIG. It is defined between a lower guide plate 58 and an upper guide plate 60, which are located opposite to each other in the vertical direction. The lower guide plate 58 is positioned at a predetermined position by fixing each of its side edges to the pair of upright walls 14a and 14b. On the other hand, the upper guide plate 60 has a first portion 62 located on the upstream side.
and a second portion 64 located on the downstream side. The first portion 62 of the upper guide plate 60 is positioned at a desired position by fixing each of its side edges to the pair of upright walls 14a and 14b.

On the other hand, the second portion 64 of the upper guide plate 60 has a connecting piece 6 projecting upward from each side of its upstream end.
6 is pivotally connected to a pin 68 that is implanted in each of the inner surfaces of the pair of upright walls 14a and 14b and projects laterally inward, so that the position shown by the solid line in FIG. 7-A, that is, the above An operating position that cooperates with the lower guide plate 58 to define the downstream part of the introduction part 54, and the 7th-AI! 5 and 6 as well as FIG. 7-A. sea bream). As shown in FIG. 6, pins 70 are further implanted on the inner surfaces of the pair of upright walls 14a and 14b, and each of the pins 70 and both side edges of the second portion 64 of the upper guide plate 60 A spring 74 is interposed between the protruding piece 72 formed in the cylindrical shape and the protruding piece 72 formed in the cylindrical shape. The spring 74 is connected to the second portion 64 of the upper guide plate 60.
is shown by a solid line in Figure 7-A, and the acting position is shown by a two-dot chain line in Figure 6, and the non-acting position is shown by a solid line in Figure 6 and a two-dot chain line in Figure 7-A. (In other words, the spring 74 has a so-called dead center state in which it is most compressed between the working position and the non-working position).

Corresponding to the fact that the second portion 64 of the upper guide plate 60 is rotatably mounted, a lid member 76 that can be opened and closed is provided above the second portion 64 of the upper guide plate 60. There is. Referring to FIGS. 5 and 6 together with FIG. 7-A, each of both sides of one end R of the lid member 76 (the right end in FIG. 7-A) is provided with a downwardly projecting member. Connecting pieces 78 are provided, and each of the connecting pieces 78 is pivotally connected to a bottle 80 that is implanted in each of the inner surfaces of the pair of upright walls 14a and 14b and projects laterally inwardly. The lid member 76 is shown in solid lines in FIGS. 5 and 7-A, in a closed position shown in dashed-double lines in FIG. 6, and in an open position as shown in solid lines in FIG. It is mounted so that it can rotate freely between the two. In the closed position shown by solid lines in FIGS. 5 and 7-A and shown by two-dot chain lines in FIG. 6, the free end of the lid member 76 (the left end in FIG. 7-A) It is locked to the upper surface of one edge of the upper plate 42 (the right edge in FIG. 7-A). Accordingly, the lid member 76 is rotated clockwise in FIG. 7-A by gripping the gripping portion 82 formed on its free end, thereby moving the lid member 76 to the position indicated by the solid line in FIG. 6. In addition to being placed in the open position shown by the two-dot chain line in the figure, the main frame Since the lid member 76 is rotated clockwise in FIG. 7-A along with the upper plate 42 of 12, it is brought to the open position shown by a solid line in FIG. 6 and shown by a two-dot chain line in FIG. 7-A. . There is a hanging piece 8 on the back side of the lid member 76.
4, and an upright piece 86 is provided on the upper surface of the second portion 64 of the upper guide plate 60, and the depending piece 84 and the upright piece 86 are interconnected by a connecting piece 88 such as a wire, thus The second portion 64 of the upper guide plate 60 is configured to be pivotable in conjunction with the lid member 76. That is, when the lid member 76 is in the closed position shown by the solid line in FIG. 7-A and shown by the two-dot chain line in FIG. 6, the second portion 64 of the upper guide plate 60 cooperates with the lower guide plate 58. Introductory part 54
It is located at the operating position that defines the downstream part of the
The lid member 76 can be opened by rotating the lid member 76 itself or by placing the main frame 12 in the non-operating position.
7-A and the solid line in FIG. 6, the second portion 64 of the upper guide plate 60 moves in conjunction with the pivoting movement of the lid member 76 to the open position. The downstream portion of the introduction portion 54 is released by pivoting to the non-operating position shown in solid lines in FIG. 6 and in dashed lines in FIG. 7-A. As described above, if a document jams downstream of the introduction section 54 of the document transport path 50, the lid can be removed by rotating the lid member 76 itself or by placing the main frame 12 in the non-operating position. It will be appreciated that once the member 76 is in the open position, the downstream portion of the introduction portion 54 of the document transport path 50 is opened, thereby allowing the jammed document to be easily removed.

As shown in FIGS. 1, 2, and 7-A, in the specific example shown, a document table 9 is provided on the upstream end side of the support frame 10
0 is attached. As clearly shown in FIG. 7-A, the upper surface of this document table 90 is a document manual positioning guide surface 9 that continues to the upstream end of the introduction aB54 of the document transport path 50 described above.
2.

On the upper surface of the document table 90, the introduction section 5 of the document conveyance path 50 is placed on a document manual positioning guide surface 92, as will be described later.
A guide protrusion 96 is formed to restrict the position of one side edge of the original 94 (FIG. 7-A) inserted into the original 4, and thus to restrict the position of the original 94 in the width direction.

The introducing portion 54 of the document conveying path 50 described above further includes a pair of introducing conveying rollers 98 for conveying the original 94 inserted into the introducing portion 54 to the main portion 52 through the introducing portion 54, and a pair of introducing conveying rollers 98. A first document position regulating member 100 that protrudes into the introduction 954 and can prevent the document 94 from advancing through the introduction 954 is disposed downstream of the introduction 954 .

Referring to FIGS. 5, 6, 7-A, and 7-B, the document 94 is conveyed through the document conveyance path 50 together with an endless conveyor belt, a document guide roller, etc., which will be explained later. Introductory conveyance roller pair 9 that monitors the document conveyance mechanism
8 is composed of a driven roller 102 and a driven roller 104.

Particularly referring to FIG. 5, a bearing member 106 is provided between the pair of upright walls 14a and 14b of the support frame 10.
A support shaft 108 is rotatably mounted by a and 106b, and at least one driven roller 102 (in the illustrated case, four driven rollers 102) is mounted at intervals in the width direction.

Further, a suspension rod 110 extending in the width direction is rotatably attached to the pair of upright walls 14a and 14b.

Brackets 112 (only one of which is shown in No. 51!I) that protrude in the upstream direction are fixed to each of the vicinity of both ends of the suspension rod 110, and a support shaft is inserted between the brackets 112. 114 is rotatably mounted. At least one driven roller 104 (in the illustrated case, four driven rollers 104 at intervals in the width direction) is mounted on this support shaft 114 to cooperate with the driven roller 102. An arm 116 is fixed to one end of the suspension rod-1 10, that is, the end projecting laterally outwardly through the upright wall 14b, and the free end of the arm 116 is attached to the upright wall 14b. An output end of a solenoid 118 fixed to the outer surface of the solenoid 14b is rotatably connected. 51st!
1 and FIG. 7-A, the driven roller 1
02 always passes through the notch 120 formed in the first portion 62 of the upper guide plate 60 and connects it downward to the introduction section 5 of the document conveyance path 50.
Although the driven roller 104 protrudes into the middle of the lower guide plate 58, in a normal state, that is, in a state in which the solenoid 118 is deenergized, the driven roller 104 is located at a position spaced apart from the driven roller 102 and below the lower guide plate 58. located in position. However, when the solenoid 118 is energized, the suspension rod 110 is pivoted in the direction shown by arrow 122 in FIG. It protrudes upward into the introduction part 54 of the document conveyance path 50 through the opening 123 that is provided, and comes into an operating position where it comes into contact with or approaches the driven roller 102;
If the original 94 is inserted into the introduction section 54 of the original transport path 50, the original 94 that is caught between the driven roller 102
Nip. Of course, instead of moving the driven roller 104 so that the driven roller 102 and the driven roller 104 are brought into contact with or close to each other in the introduction section 54 of the document transport path 50, if desired, the driven roller 102 may be moved. or by moving the driven roller 10
By moving both the driven roller 2 and the driven roller 104, the driven roller 102 and the driven roller 104 can be brought into contact or close to each other in the introduction section 54 of the document conveyance path 50. As clearly shown in FIG. 5, one end of the support shaft 108 on which the driven roller 102 is attached, that is, the end that protrudes laterally outward through the upright wall 14a, is provided with a toothed belt. A car 124 is attached. and,
This toothed belt wheel 124 is a timing belt 126
It is connected to a suitable drive source (see FIG. 11), such as an electric motor, disposed within the support frame pair IO. When the drive source is energized, the support shaft 108 and the driven roller 102 attached thereto are rotated in the direction shown by arrow 128, so that the driven roller 104 is positioned in the operating position shown in FIG. 7-B. If so, the document 94 nipped between the driven roller 102 and the slave roller 104 is advanced through the introduction section 54 of the document conveyance path 50 and sent to the main section 52 .

In the specific example shown in the figure, at least one first document position regulating member 100 is fixed to the suspension rod 110, as shown in FIG. It is composed of four fixed protruding pieces. The first document position regulating member 100 in the illustrated example is fixed to the suspension rod 110 and is therefore moved by the solenoid 118 together with the driven roller 104 of the introduction conveyance roller pair 98. When solenoid 118 is deenergized (therefore, driven roller 104
is in the non-operating position), the free end of the first document position regulating member 100 is shaped into a lower guide plate 58, as shown in FIG. 5 and FIG. 7-A. It protrudes through the opening 130 into the introduction section 54 of the document transport path 50, and further crosses the introduction section 54 to the upper guide plate 60! 2 into the opening 132 formed in the portion 64 of the document transport path 5.
It is positioned at a blocking position that prevents the document 94 from advancing through the introduction section 54 of 0. On the other hand, when the solenoid 118 is energized (therefore, the driven roller 104 is positioned at the operating position), the free end of the first document position regulating member 100 is moved as shown in FIG. 7-B. It is retracted from the introduction portion 54 of the path 50 and located below the lower guide plate 58, and thus positioned at a non-blocking position that allows the document 94 to proceed through the introduction portion 54 of the document conveyance path 50.

The illustrated document feeding and discharging device 4 further includes a main 11S5 from an introduction portion 54 of the document conveyance path 50, as illustrated in FIG.
At least one rod is used to transport the original carried into the main part 2 through the main part 52, further transport it from the main part 52 through the curved lead-out part 56, and discharge it to the original receiving surface 46. 134 (see also FIGS. 5 and 8).

As shown in FIG. 5, four rollers 136 are mounted on the main shaft 18 at intervals in the width direction. on the other hand,
As shown in FIGS. 8 and 10-A, at the free end of the main frame 12 (i.e., the left end in FIG. 3), a support shaft is provided between the pair of side plates 20a and 2Ob of the main frame 12. 138 and 140 are rotatably mounted on the support shaft 138. Four rollers l42 (
8 and 10-A), and four rollers 144 (of which only one is shown in FIG. 8 and FIG. (only one of which is shown in Figure to-A) is installed. Then, the four endless belts 134
As can be easily understood from FIG.
It is wound around each of the rollers 136 attached to the main shaft 18, each of the rollers 142 attached to the support shaft 138, and each of the rollers 144 attached to the support shaft 140, and each of the rollers 136 attached to the main shaft 18. The main portion 52 of the document conveyance path 50 is
an operating run extending therefore through the underside of the lower plate 44;
Continuing from this operating running section, the rollers 142 mounted on the support shaft 138 to the rollers 14 mounted on the support shaft 140
4 through the curved outlet 56 of the document transport path 50, and further between the upper plate 42 and the lower plate 44 from the roller 144 mounted on the support shaft 140 to the roller 136 mounted on the main shaft 18. and an inactive run extending through the. As shown in FIGS. 5 and 7-A, a pair of side plates 20a and 2O of the main frame 12 are adjacent to the main shaft 18.
A guide rod 146 is rotatably mounted between b. The guide rods 146 guide each of the endless conveyor belts 134 to ensure sufficient wrapping contact of the endless conveyor belts 134 with the rollers 136. Further, as shown in FIG. 8 and FIG. 10-A, a support rod 148 is installed between the pair of side plates 20a and 2Ob of the main frame 12 adjacent to the support shafts 138 and 140. Four support arms 150 (only one of which is shown in FIGS. 8 and 10-A) are rotatably mounted at intervals in the width direction. The free end of each of the support arms 150 acts on each of the endless conveyor belts 134, and the endless conveyor belts 13
A tension setting roller 152 is rotatably mounted to set the tension of each of the four parts to a desired value. The tension of each of the endless conveyor belts 134 is determined by the threading of the adjusting screw 154 into the stationary member 153, which passes through the protrusion formed on the support arm 150 and is screwed into the stationary member 153 located below. Adjust the degree of support arm 150
By appropriately adjusting the angular position of each tension setting roller 152, the tension setting roller 152 can be set to a desired value. Here, referring again to FIG. 5, a toothed belt pulley 156 is attached to one end of the main shaft 18, that is, the end that passes through the side plate 20a and projects laterally outward. The introduction conveyance roller pair 98 mentioned above
In addition to the toothed belt wheel 124, one end of the support shaft 108 on which the driven roller 102 is attached, that is, the end that protrudes laterally outward through the upright wall 14a, is provided with teeth. A belt wheel 158 is attached.

The toothed belt wheel 156 and the toothed belt wheel 158
A timing belt 160 is wound around the belt. As described above, it is clear that the main shaft 18 is connected to the support shaft 108, and is therefore connected to a suitable drive source such as an electric motor (see FIG. 11) via the support shaft 108. Dew.

When the drive source is energized, the support shaft 108 is rotated in the direction shown by the arrow 128 as described above, and therefore the main shaft 18 and the roller 136 attached thereto are also rotated in the direction shown by the arrow 128, thus rotating the endless conveyor belt. 134 is arrow 128
It is moved in the direction shown by.

In the illustrated example, as further illustrated in FIG.
Four blocks 162 (as shown in FIG. (only one of which is shown) are fixed. A leaf spring 164 is fixed to each of the blocks 162, and a hemispherical pressing piece 166 is fixed to the free end of each of the leaf springs 164. Each of the pressing pieces 166 is elastically biased downward by the elastic biasing action of the leaf spring 164, projects downward through an opening formed in the lower plate 44, and presses the back surface of each of the endless conveyor bells 134. The surface of the endless conveyor belt 134 is brought into contact with or close to the surface of the transparent plate 8, so that when a document (not shown in FIG. 3) is present approximately in the middle of the main portion 52 of the document conveyance path 50, presses the surface of each endless conveyor belt 134 against the document.

The main 852 of the document conveyance path 50 further includes a document conveyance path 50.
A second document position regulating member 168 that protrudes near the downstream end of the main portion 52 and can prevent the document from advancing through the main portion 52; and the second document position regulating member 168 prevents the document from advancing. An endless conveyor bell is located slightly upstream of the position where
A pressing roller 170 is provided that can press the back surface of each of the endless conveyor belts 134 to bring the surface of each of the endless conveyor belts 134 into contact with or close to the surface of the transparent plate 8.

To explain with reference to FIG. 8 and FIG. 10-A, a suspension rod 1 is provided between a pair of side plates 20a and 2Ob of the main frame
72 is rotatably mounted.

In the illustrated example, the second document position regulating member 168 is composed of one (or a plurality of protruding pieces fixed at intervals in the width direction) fixed to the suspension rod 172. has been admonished.

A connecting piece 174 is further fixed to the upper surface of the suspension rod 172, and an output end of a solenoid 176 fixed at a predetermined position in the main frame 12 is rotatably connected to this connecting piece 174. When the solenoid 176 is deenergized, the second document position regulating member 168 allows endless conveyance through an opening 178 formed in the lower plate 44 as shown by solid lines in FIGS. 8 and 10-A. The belt 134 protrudes into the main portion 52 of the document transport path 50, and thus the main portion 52
is positioned in a blocking position to prevent the document from advancing through the document. As shown in FIG. 10-A, the position where the second document position regulating member 168 blocks the advance of the document is near the front edge of the transparent plate 8 (i.e., the left edge in FIG. 10-A). is important. On the other hand, when the solenoid 176 is energized, the suspension rod 172 is rotated in the direction shown by the arrow 180, and the second document position regulating member 168 is moved to the position shown in FIG. 10-A.
As shown by the dashed dotted line, it is set back from the main 952 of the document transport path 50 and positioned at a non-blocking position where the document is allowed to advance.

Four support arms 182 are also fixed to the suspension rod 172 at intervals in the width direction (three of which are shown in FIG. 8), and each of the support arms 182 The above-described pressure roller 170 is rotatably mounted on the holder. Therefore, the pressing roller 170 in the illustrated example is moved together with the second document position regulating member 168 by the action of the solenoid 176. When the solenoid 176 is deenergized (therefore, when the second document position regulating member 168 is positioned at the blocking position), each of the pressure rollers 170 is moved by the solid line in FIGS. 8 and 10-A. As shown, it is located above the lower plate 44, and is therefore positioned at a non-active position where it does not act on the endless conveyor belt 134.

On the other hand, the solenoid 176 is energized (therefore, the second document position regulating member 168 is positioned at the non-blocking position).
Each of the pressing rollers 170 projects downward through an opening 184 formed in the lower plate 44 as shown by the two-dot chain line in FIG. 10-A, and presses the back surface of the endless conveyor belt 134, thus The surface of the endless conveyance belt 134 is brought into contact with or close to the surface of the transparent plate 8, and the main portion 52 of the document conveyance path 50 is brought into contact with or close to the surface of the transparent plate 8.
If a document (not shown in FIGS. 8 and 10-A) is present at the downstream end of the conveyor belt 134, each surface of the endless conveyor belt 134 is pressed against the document.

Next, Figure 8. Figure 9 and Figure 10-A and Figure 10-
To explain with reference to Figure B, in the illustrated example,
The curved lead-out portion 56 of the document conveyance path 50 is defined by a guide plate 186 having an arcuate cross section and fixed between the free ends of the pair of side plates 20a and 20b of the main frame 12. As clearly shown in FIG. 10-A, the guide plate 186 is located opposite the rollers 142 and 144 around which the endless conveyance belt 134 is wound, and is located opposite to the rollers 142 and 144 around which the endless conveyance belt 134 is wound. Originals carried out from section 52 (81st!
(not shown in FIGS. 9 and 10-A) is guided upward to a document receiving surface 46 defined by the upper surface of the upper plate 42. The curve deriving portion 56 of the document conveyance path 50 includes:
An upstream document guiding roller 188 that is brought into contact with or close to the surface of the endless conveyor belt 134 at a position facing the roller 142, and a downstream document guiding roller 188 that is brought into contact with or close to the surface of the endless conveyor belt 134 at a position that opposes the roller 144. A roller 190 is provided. Regarding the mounting method of the upstream document guide roller 188 and the downstream document guide roller 190, as shown in FIGS. 8 and 9,
A suspension rod 192 is rotatably mounted between the free ends of the pair of side plates 20a and 20b of the main frame 12.

Support arms 194 extending downward are fixed to both ends of the suspension rod 192.
A support shaft 196 is rotatably mounted therebetween. Four upstream original guide rollers 188 are mounted on this support shaft 196 at intervals in the width direction. Further, support arms 198 are rotatably attached to both ends of the suspension rod 192, and a support shaft 200 is rotatably attached between the support arms 198. Four downstream document guide rollers 190 are mounted on this support shaft 200 at intervals in the width direction. Support arm 194
and each support arm 198 includes a spring 20.
2 is interposed.

The spring 202 elastically biases the suspension rod 192 and the support arm 194 fixed thereto in a counterclockwise direction when viewed from the lower right in FIG.
Each of the upstream document lead-out rollers 188 attached to the curved lead-out portion 5 passes through an opening 204 formed in the guide plate 186.
6 and is brought into elastic contact with the surface of the endless conveyor belt 134. At the same time, the spring 202 elastically biases the support arm 198 clockwise when viewed from the lower right in FIG. It projects into the curved outlet 56 through the perforated opening 206 and is brought into elastic contact with the surface of the endless conveyor belt 134 .

In the specific example shown, when the main frame 12 is further moved from the active position to the non-active position, the upstream document lead-out roller 188 and the downstream side In order to automatically position the document guide roller 190 from an active position where it contacts the surface of the endless transport belt 134 to a non-active position where it is separated from the surface of the endless transport belt 1340, the following mechanism is provided.

Referring to FIGS. 8 and 9, a projecting piece 208 is fixed to one end of the suspension rod 192, that is, the end projecting laterally outward through the side plate 20b.
A pin 210 is implanted in this protruding piece 208. On the other hand, a bracket 212 and a pin 214 are fixed to the outer surface of the side plate 20b.
4 supports the sliding piece 216 so as to be slidable in the vertical direction. A coil spring 218 that elastically biases the sliding piece 216 downward is stretched between the upper end of the sliding piece 216 and the bracket 212. Furthermore, a pair of brackets 220 are fixed to the main frame 12, and the brackets 220 are fixed to the main frame 12.
20, an interlocking piece 222 is swingably supported. Each end of the interlocking piece 222 is connected to the support arm 19.
4 and the other end is connected to a support arm 198.

In such a mechanism, when the main frame body 12 is placed at the operating position, the lower end of the sliding piece 216 that protrudes through the bracket 212 comes into contact with the upper surface of the copying machine housing 2, thereby causing the sliding piece to 216 is maintained in the state shown in FIGS. 8, 9, and 10-A. However, as shown in FIG. 10-B, when the main frame 12 is lifted from the working position to the non-working position, the spring 21
8 causes the sliding piece 216 to move downward to a position where the upper end of the elongated slot 224 formed therein abuts the pin 214. In this way, the protrusion 226 formed on the sliding piece 216 is inserted into the pin 2.
10, thereby causing the suspension rod 192 and support arm 194 to pivot clockwise in FIGS.
88 is separated from the surface of the endless conveyor belt 134 and retracted to the back of the guide plate 186, and becomes the non-operating position shown in FIG. 10-B. At the same time, the pivoting movement of the support arm 194 as described above causes the interlocking piece 222 to swing in the counterclockwise direction when viewed from above in FIG. Thus, the downstream document lead-out roller 190 also separates from the surface of the endless conveyor belt 134 and retreats to the back of the guide plate 186, reaching the non-operating position shown at No. 10-Blffl. As shown above, the curved lead-out portion 56 of the document conveyance path 50
If a document jams, simply lifting the main frame 12 from the operating position to the non-operating position will cause the upstream document guide roller 188 and the downstream document guide roller 190 to return to the non-operating position shown in FIG. 10-B. automatically positioned in the working position,
Therefore, a jammed document can be taken out very easily.

The document feeding and ejecting device 4 is further provided with various detectors as described below, which constitute part of the control means for controlling the operation of its various control elements.

To explain with reference to FIG. 5, the amount of rotation of the support shaft 108,
Therefore, the introduction conveyance roller pair 98 and the endless conveyance belt 134
An actuation amount detector 228 is provided to detect the amount of driving. The actuation amount detector 228 is positioned so as to straddle a detection plate 230 attached to one end of the support shaft 108 that penetrates the upright wall 14a and projects laterally outward. It consists of an optical detector 232. The detection target plate 230 has a plurality of notches 234 formed at intervals in the circumferential direction on its peripheral edge, and the optical detector 232 has a light emitting element located on one side of the detection target plate 230. It has a light receiving element located on the opposite side of the detection target plate 2300. When the detection target plate 230 is rotated in accordance with the rotation of the support shaft 108, the light beam from the light emitting element of the optical detector 232 is received every time the notch 234 of the detection target plate 230 passes the optical detector 232. The light is received by the element, and thus the optical detector 232 generates a pulsed signal. Therefore, by counting the pulse-like signals detected by the optical detector 232, it is possible to detect the amount of rotation of the support shaft 108, and therefore the amount of drive or operation of the pair of introduction conveyance rollers 98 and the endless conveyance belt 134. can.

Also, Figure 3. As shown in FIGS. 5, 6, and 7-A, the first document position regulating member 100 in the introduction section 54 of the document conveyance path 50 is positioned upstream of the position where the first document position regulating member 100 prevents the document from proceeding. A first document detector 236 is provided to detect the document. In the illustrated example, this first document detector 236 is arranged below the lower guide plate 58 defining the introduction 854 of the document transport path 50 and above the second portion 64 of the upper guide plate 60. It consists of an optical detector having a light-emitting element and a light-receiving element provided therein, through an aperture 238 formed in the lower guide plate 58 and an aperture 240 formed in the second portion 64 of the upper guide plate 60. When the first document position regulating member 100 is in the blocking position, the introducing section 54 is monitored upstream of the blocking position where the advance of the document is blocked, and the document passing therethrough is detected.

Furthermore, Figures 3 and 8. As shown in FIGS. 9 and 10-Δ, a second document detector 242 is provided to detect the document at the curved lead-out portion 56 of the document conveyance path 50. In the illustrated specific example, this second document detector 242 includes:
Microswitch 24 arranged on the back of guide plate 186
4 and an actuation piece 24 for this microswitch 244.
It consists of 6. The actuating piece 246 rotatably attached to the bottle 248 implanted in one side of the support arm 198 mentioned above is connected to an opening 250 formed in the guide plate 186.
It has a sensing portion protruding into the curved lead-out portion 56 and an actuating portion located opposite the actuator 252 of the microswitch 244 . Such actuating piece 246 is usually the tenth actuating piece 246.
The state as shown in FIG. 1, the actuating portion is rotated counterclockwise at
is pressed, thus switching the microswitch 244.

Furthermore, as shown in FIGS. 3, 5, and 7-A, a main frame position detector 254 is provided. In the illustrated example, the main frame position detector 254 is separated from a microswitch having an actuator 256. The main frame body position detector 254 detects the rear edge of the lid member 76 when the main frame body 12 is positioned at the operating position and the lid member 76 is placed in the closed position, as shown by the solid line in FIG. 7-A. The actuator 25 is
6 is pressed, thus forcing it into the first or open condition. On the other hand, the main frame 12 is positioned in the non-operating position shown in FIG. 2, and the lid member 76 is accordingly brought into the open position shown by the solid line in FIG. 6 and by the two-dot chain line in FIG. 7-A. Then, the protruding piece 258 separates from the actuator 256, thereby bringing it into the second state, that is, the closed state. Further, even if the lid member 76 itself is operated to move to the open position when the main frame body 12 is positioned at the operating position, the protruding piece 258 is detached from the actuator 256, thereby returning to the second state, that is, the operating element 256. Forced to close.

Next, referring also to FIG. 11, which shows a control circuit diagram constituting a control means together with the various detectors 228, 236, 242, and 254 described above, the operation of the document supplying and discharging device 4 as described above will be explained. The effects will be summarized and explained.

(1) Manual positioning of document or start of document feeding; (1-i)
Preparation operation: When feeding and ejecting documents semi-automatically using the bulk feeding and ejecting device 4, as shown in FIGS. 1 and 3, the main frame 12 is placed in the operating position. At the same time, the lid member 76 is placed in the closed position.

As a result, the main frame position detector 254 enters the first state, that is, the open state, and its output signal becomes "L". and,
At this time, if there is an abnormality in the electrostatic copying machine main body and document feeding/ejecting device 4, such as a copy paper jam in the electrostatic copying machine main body or a document jamming in the document feeding/ejecting device 4, as will be mentioned later. If no occurrence occurs, a normal signal rHJ is sent from the main control means (not shown) of the electrostatic copying machine main body.
is supplied to the AND gate A1, and the document is detected from the output end Q of the flip-flop FFI in the reset state, from the main frame body position detector 254 through the inverter IN1, and from the output end Q of the flip-flop FF2 in the reset state. A signal "H" is supplied to each AND gate AI from the first document detector 236 whose output signal is rlJ through the inverter IN2, and thus a signal "H" is generated at the output terminal of the AND gate AI. Then, the signal "H" is supplied to the lamp L1 indicating completion of document feeding and ejection preparation, and the lamp L1 is turned on.

(1-ij) Manual document positioning; After lamp L1 is lit, the document 94 to be copied (7th
- A) is manually placed on the manual document positioning guide surface 92 of the document table 90, and then one edge of the document 94 is placed on the guide guide surface 96.
The original 94 is moved forward while the original 94 is in contact with the original 94.
The front part of the first document position regulating member 10 is partially inserted into the introduction part 54 of the document conveyance path 50, and thus the front edge of the document 94 is positioned at the blocking position as shown in FIG. 7A.
Bring it into contact with or close to 0.

Then, the first document detector 236 detects the document 94 and generates a document manual positioning end signal, that is, the output signal becomes rHJ. Therefore, the signal supplied from the first document detector 236 to the AND game AI through the inverter IN2 becomes "L", and the lamp L1 is turned off. When the trailing edge of the original 94 passes through the exposed position of the first original detector 236, the light is turned on again).

(I-iii) Start of document feeding; When the output signal of the first document detector 236 becomes rHJ as described above, the signal "H" becomes
and is supplied to the delay circuit Di. At this time, since the flip-flop FF3 is in the reset state, the signal "H" is also sent from the output terminal Q of the flip-flop FF3 to the AND gate A2.
'' is supplied, thus a signal rHJ is output to the output terminal of AND gate A2, and this output signal rHJ is supplied to AND gate A3. Moreover, the signal rHJ is also supplied from the delay circuit D1 to the AND gate A3 after a predetermined delay time set by the delay circuit D1 has elapsed, and thus the AND gate A3 generates the output signal rHJ at its output terminal. This output signal "H" is supplied to AND gate A4 via OR gate 01. Also, the output terminal Q of the flip-flop FF4 in the reset state is connected to the AND gate A4.
The signal rHJ is also supplied from the AND gate A.
The signal rHJ is output to the output terminal of 4, and the signal "H"
is supplied to the input terminal CP of the flip-flop FF5.

Then, since the normal signal "H" continues to be supplied from the main control means of the electrostatic copying machine main body (therefore, the input signal rHJ is present at the input terminal D of the flip-flop FF5),
Flip-flop FF5 is set, and signal rHJ is applied to its output terminal Q. This signal rHJ is supplied to the AND gate A5, and the signal rHJ from the output terminal Q of the flip-flop FF4 in the reset state is also supplied to the AND gate A5.
5, and thus a signal rHJ is generated at the output terminal of the AND gate A5, and this signal "H" is supplied to the solenoid 11.
8 and energizes the solenoid 118. When the solenoid 118 is energized in this way, the driven roller 104 of the introduction conveyance roller pair 98 is positioned at the operating position, and the introduction conveyance roller pair 98 is moved to the original position as shown in FIG. 7-B.
4, and the first document position regulating member 100
is positioned at a non-blocking position that allows the document 94 to advance.

At the same time, the signal rHJ from the output terminal Q of the flip-flop FF5 is also supplied to the OR gate 02, and then, after a predetermined delay time set by the delay circuit D2, is supplied to the AND gate A6. rHJ is activated, and this signal "H" is supplied to the drive source to energize the drive source. When the drive source is energized in this way, the introduction conveyance roller pair 98 and the endless conveyance belt 1
34 is driven, and thus feeding of the original 94 is started.
The document 94 is conveyed through the introduction section 54 and main section 52 of the document conveyance path 50 .

(n) Start of document feeding or stop of document feeding; (If-i) Detection action of operation amount detector 228; As described above, the drive source is energized, and the pair of introduction conveyance rollers 98 and the endless conveyance belt 1 are energized.
34, as can be understood from FIG. The device 232 sequentially generates pulse-like signals and supplies the pulse-like signals to the document feeding counter C1 and the document feeding counter C2.

(II-ii) Detection of insufficient number of documents or manual document positioning operation error; The document feeding counter C1 starts counting from the time when the drive source is energized and feeding of the document 94 is started as described above. , its first output end X1 is connected to the introduction conveyance roller pair 98
and the document 94 by a distance corresponding to the minimum document size in the conveyance direction necessary for the endless conveyor belt 134 to normally convey the document.
The output signal rHJ is activated at the point in time when the actuation amount corresponding to the conveyance of the
This output signal rHJ is sent to the flip-flop FF
2 input terminal CP. At this point, the first document detector 236 is detected because the dimension of the document 94 in the conveyance direction is shorter than the minimum document dimension, or because the manually positioned document 94 is immediately pulled out manually. Already manuscript 9
4 is no longer detected and the output signal has returned to "L", this output signal "L" is converted to rHJ by the inverter IN2 and sent to the input terminal D of the flip-flop FF2.
is supplied to Therefore, the signal "H" is supplied to both the input terminal CP and the input terminal D of the flip-flop FF2, the flip-flop FF2 is set, and the document jam occurrence signal, that is, the signal rHJ is output to the output terminal Q of the flip-flop FF2. be done. This signal rHJ is supplied to flip-flop FF5 via OR gate 03 and to flip-flop FF6 via OR gate 04, clearing flip-flops FF5 and FF6, thus deenergizing the drive source and solenoid 1l8. (and 176) (Incidentally, the solenoids 118 and 176 determine whether they are in the energized state or in the deenergized state when the above-mentioned document jam occurrence signal or the document jam occurrence signal mentioned later is generated. regardless of the situation). At the same time, the document feeding counter C1 is also cleared. Further, the document jam occurrence signal "H" generated at the output terminal Q of the flip-flop FF2 is supplied to the lamp L2 that indicates the occurrence of a document jam, and lights up this lamp L2, and at the same time, the electrostatic copying machine itself It is supplied as a clear signal to the main control means to stop or disable the operation of the electrostatic copying machine itself.

(n-iii) Deenergization of solenoid 118; above (I-i
The feeding of the original 94 is started as described in (n), and the original 94 is fed.
When the document 94 continues to be fed normally and the trailing edge of the document 94 passes the detection position of the first document detector 236, the first document detector 236 no longer detects the document 94 and generates a document introduction completion signal. , that is, the output signal of the first document detector 236 is “H”.
” to return to “L”. Then, this signal "L" is converted into r H J by the inverter IN2 and supplied to the AND gate A7. At this time, since the signal "H" is also supplied to the AND gate A7 from the output terminal Q of the set flip-flop FF5, the signal rHJ is generated at the output terminal of the AND gate A7, and this signal " H
” is supplied to the input terminal PR of the flip-flop FF4,
Flip-flop FF4 is set. Thus,
&game} Flip 7 lop FF4 supplied to A5
The output end Q changes from "H" to "L", thereby deenergizing the solenoid 118, returning the driven roller 104 of the introduction conveyance roller pair 98 to the non-operating position, and moving the first document position regulating member 100. Returned to blocking position.

Further, when the output signal of the first document detector 236 returns from "H" to "L", the lamp L1 is lit again (therefore, it is displayed that it is possible to manually position the next document). ).

(II-iv) Document jam detection until the edge of the document passes the first document detector 236; the second output end y1 of the document feeding counter C1 is Endless conveyance bell} 134 is driven by an operating amount corresponding to conveying the document 94 by a distance corresponding to the maximum dimension in the conveyance direction of the document that can be manually positioned (for example, at the time when 55 pulse signals are counted) It generates a signal "H" and supplies this output signal "H" to the AND game A8.At this point, the trailing edge of the document 94 is detected by the first document detector 236.
q) Due to the document 94 jamming before passing the detection position, the first document detector 236 detects the document 94.
If the output signal rHJ continues to be detected, the flip-flop FF5 is set and the signal "H" is produced at its output terminal Q, and the flip-flop FF4 is set. Since it is in the reset state and the signal rHJ is generated at its output terminal Q, the signal rHJ is generated at the output terminal of the AND game A5, and this signal "H" is supplied to the AND game A8. There is. Therefore, the AND gate A8 generates the signal rHJ at its output terminal, and supplies the signal rHJ to the input terminal PR of the flip-flop FF2 via the OR gate 05. Thus, flip-flop FF2 is set and its output terminal Q
A document jam occurrence signal, that is, a signal "H" is generated.

When such a document jam occurrence signal is generated, the same operation as described above (n-it) is performed.

(II-v) Generation of a copying process start signal; The third output terminal 2 of the document feeding counter C1 is configured so that even if the conveyance of the document 94 is stopped, the leading edge of the document 94 is The document 94 is moved to a position where it can reach the second document position regulating member 168 (FIGS. 3, 8, and 10-A), which is in the blocking position.
A pair of conveying rollers 98 are introduced by an amount of operation sufficient to convey the
The output signal rHJ is generated at the time when the endless conveyor belt 134 is driven (for example, when 60 pulse signals are counted). This output signal "rH" is supplied to the main control means of the electrostatic copying machine itself via the agate 06 as a copying process start signal. Then, in response to this copying process start signal, the required copying process by the electrostatic copying machine itself is started (therefore, in order to start the required copying process by the electrostatic copying machine itself, the electrostatic copying machine itself is There is no need to operate the equipped copy start switch PS-IE (Figure 1 and Figure 2).

(II-vi) Stop feeding the original document; The fourth output terminal α of the original document feeding counter C1 is connected to the original #I
the second document position regulating member l whose front edge 94 is in the blocking position;
68 (31!
The output signal r H J is detected at the time when is driven (for example, when 63 pulse-like signals are counted). This output signal r}{J is supplied to the flip-flop FF5 via the agate 03 to clear the flip-flop FF5, thus deenergizing the drive source. When the drive source is deenergized, the driving of the introduction conveyance roller pair 98 and the endless conveyance belt 134 is stopped, and the feeding of the original document 94 is stopped. However, the document 94 continues to move forward due to coasting after the feeding is stopped, and its leading edge reaches the second document position regulating member 168 (FIGS. 3, 8, and 10-A) which is in the blocking position. It will stop when it makes contact.

If desired, instead of energizing the drive source by the output signal rH outputted from the fourth output terminal α of the document feeding counter C1, for example, the second document position regulating member 168 may be used.
An additional document detector is disposed slightly before the position where the document 94 is blocked from proceeding, and this document detector
When the leading edge of the front edge is detected, the driving source may be de-energized in response to this detection.

(III) Start of document ejection to end of document ejection; (II[-
i) Start of document ejection; When the required copying process by the electrostatic copying machine itself is started by the copying process start signal as explained in (II-v) above, the main control means of the electrostatic copying machine itself is deactivated. Signal "H"
to give birth to. This inactivation signal "H" is applied to the pulse-like copy number signal rHJ generated by the main control means each time the copying process is performed (for example, at the end of the exposure process) by the number of copies that matches the set number of copies. At the point when it is stopped, it disappears, that is, the operation start signal becomes "Lj."Thus, the above signal "Lj" disappears.
" is converted to "H" by the inverter IN3 and supplied to the AND game A9. Further, since the copy number signal "H" is in the form of a pulse, it immediately disappears, that is, becomes a signal "L", and this signal "L" is also converted to "H" by the inverter IN4 and supplied to the AND gate A9. Therefore, when the copying process is performed the number of times that matches the set number of copies, the AND gate A9 generates the signal rHJ at its output terminal, and supplies this signal "H" to the input terminal CP of the seven flip-flop FF6. .

On the other hand, at this point, the output signal of the first document detector 236 is "L", and this output signal "L" is converted to "H" by the inverter IN2, and the AND gate A
At the same time, the signal rHJ from the output terminal Q of the set flip-flop FF5 is also supplied to the AND gate AT, and therefore the signal "H" is output to the output terminal of the AND gate A7. This signal "H" is supplied to the flip-flop FF4, and the flip-flop F
I'm setting F4. Therefore, the flip-flop F
From the output terminal Q of F4 to the human power terminal D of 7 flip-flop FF6
A signal "H" is supplied to the terminal.

Therefore, when the signal "H" is supplied to the input terminal CP of the flip-flop FF6 as described above, the flip-flop FF6 is set and the signal "H" is generated at its output terminal Q. Then, this signal "H" is supplied to the input terminal CP of the flip-flop FF4 to clear it, and is also supplied to the AND gate AIO. This AND gate A10 is also supplied with a signal r}{J from a second output terminal y, of a document discharge counter C2, which will be explained later, and therefore a signal "H" is supplied to the output terminal of the AND gate AIO. generated. This signal "H" is sent to solenoid 176, thus energizing solenoid 176. When the solenoid 176 is energized, the second document position regulating member 168 is positioned at the non-blocking position that allows the document 94 to advance, as shown by the two-dot chain line in FIG. Positioned in working position.

The signal "H" from the output terminal Q of the set flip-flop FF6 is also supplied to the OR game 02, and therefore, after the predetermined delay time set by the delay circuit D2, the signal "H" is sent to the output terminal of the AND game A6. is generated, and this signal "H" is supplied to the drive source to energize the drive source.

Then, the driving of the endless conveyance belt 134 together with the introduction conveyance roller pair 98 is started, and the discharge of the document 94 is started, and the document 94 passes from the main portion 52 of the document conveyance path 50 through the curved lead-out portion 56 to the document receiving surface 46 (first Figure 1).

(III-ii) Start counting of the document ejection counter C2; When the drive source is energized as described above, the above (I
The optical detector 232 of the actuation quantity detector 228 begins to generate pulsed signals in sequence as described in I-i). At the same time, since the flip-prop FF6 is set, the signal supplied from its output terminal Q to the document ejection counter C2 becomes "L". The pulse-like signals from the target detector 232 begin to be counted.

(III-iii) The leading edge of the document is the second document detector 24
Detection of document jam until the document jam reaches the second document detector 242; the first output end The output signal rHJ is generated at the point when the endless conveyor belt 134 is driven by an amount of operation corresponding to conveying the document 94 a sufficient distance to reach the document 94 (for example, when 20 pulse signals are counted). The output signal "H" is supplied to the AND gate A11. At this point, the leading edge of document 94 is at the second
The original 94 is detected before reaching the detection position of the original detector 242.
The second document detector 242
If the document 94 has not been detected yet, the output signal of the second document detector 242 is "L", and this output signal "L" is converted to "H" by the inverter INS, and the output signal is converted to "H" by the AND gate A11. is supplied to. Therefore, and game}
A signal "H" is generated at the output terminal of All, and this signal rH
J is supplied to the input end PR of the flip-flop FF2 via the OR gate 05. As a result, the flip-flop FF2 is set, and a document jam occurrence signal, that is, a signal "H" is generated at its output terminal Q. When such a document jam occurrence signal is generated, the operation described in (II-ii) above is performed.

(II[-iv) Deenergization of the solenoid 176; The second output terminal y of the document ejection counter C2 is normally supplied with the signal "H".
'', but at the point when the ejection is started by a distance corresponding to the maximum dimension of the document in the conveyance direction, and the endless conveyor belt 134 is driven by an amount of operation corresponding to conveying the document (
For example, when 55 pulse-like signals are counted), the signal "H" is made to become "L". When the signal at the second output terminal y2 of the document ejection counter C2 becomes "L", the solenoid 1
76 is deenergized, and thus the second document position regulating member 168 is returned to the blocking position and the pressing roller 170 is returned to the non-operating position as shown by the solid line in FIG. 10A.

(III-v) Stopping document ejection; The third output terminal α, of the document ejection counter C2 is configured to sufficiently handle the document 94 that has started to be ejected even if the document 94 has the maximum dimension in the conveyance direction. An output signal r}{J is generated at the time when the endless conveying belt 134 is driven by the amount of operation required to discharge the document onto the document receiving surface 46 (for example, at the time when 130 pulse-like signals are counted). This output signal "H" is supplied to flip-flop FF6 via OR gate 04, and clears flip-flop FF6. Thus,
The signal at the output end Q of the flip-flop FF8 becomes "L", the drive source is deenergized, and the driving of the endless conveyor belt 134 together with the introduction conveyor roller pair 98 is stopped.

(III-vi) The trailing edge of the document is the second document detector 242
Document jam detection until the document 94 passes the second document; at the time when the third output terminal α of the document ejection counter C2 generates the output signal "H", the trailing edge of the document 94 reaches the second document. Detector 2
Because the document 94 jams before passing the detection position 42, the second document detector 242 continues to detect the document 94 (in other words, it does not yet detect the trailing edge of the document 94). If the output signal rHJ continues to be output, this output signal "H" continues to be supplied to the AND gate A12. On the other hand, the third output terminal α of the document ejection counter C2
, the above (III-v
), when the 7 flip-flop FF6 is cleared as described in the above, the output signal "
H" is generated.

As a result, the document discharge counter C2 is cleared, and the output signal rHJ is supplied to the AND gate A12, so that the signal rHJ is supplied to the output terminal of the AND gate A12.
J is generated. Such signal rHJ is
The flip-flop FF2 is set via the flip-flop FF2, and a document jam occurrence signal, ie, "H" is generated at the output terminal Q of the flip-flop FF2. When such a document jam occurrence signal is generated, the operation described in (II-ii) above is performed.

(TV) When the next original is manually positioned before the start of original ejection; As mentioned in (II-iv) above, when the trailing edge of the original 94 passes the detection position of the first original detector 236, 1
The output signal of the original document detector 236 becomes "L". However, if the next document 94 is manually positioned as described in (I[I-i) above before the ejection of the document 94 is started, then (I-ii) above is performed. As mentioned, the output signal of the first document detector 236 becomes "H" again.

Then, this output signal rHJ is applied to the 7 flip-flop FF3.
is supplied to

In such a state, as mentioned in (III-i) above, the main control means of the electrostatic copying machine itself issues an operation start signal by performing the copying process a number of times that match the set number of copies for the original document 94. rl,", this signal "L
" is converted into rHJ by the inverter IN3 and supplied to the input terminal CP of the flip-flop FF3, thus setting the flip-flop FF3 and producing a signal "H" at its output terminal Q. The signal rHJ generated at the output terminal Q of the flip-flop FF3 is supplied to the AND gate A4 via the OR gate 01. Furthermore, when the operation start signal rlJ is activated, the flip-flop FF4 is cleared as mentioned in (III-i) above, and therefore the signal rHJ is generated at the output terminal Q of the flip-flop FF4. "H" is also supplied to AND GATE 4. Therefore, the signal rHJ is applied to the output terminal of AND gate A4.
is detected and supplied to the input terminal CP of flip-flop FF5, and flip-flop FF5 is set. The feeding of the next document 94 is then initiated as referred to in (I-iii) above, and this is also followed by a procedure substantially identical to that described for the previous document 94. be done.

On the other hand, the signal "H" generated at the output terminal Q of the flip-flop FF3 is also supplied to the AND gate A13. Further, the signal rHJ is also supplied to the AND gate 13 from the output terminal Q of the flip 7op FFI which has been reset, and therefore the signal rHJ is generated at the output of the AND gate A13, and the copying process start signal is sent via the OR gate 06. and is supplied to the main control means of the electrostatic copying machine itself. Therefore, the copying process for the next document 94 by the electrostatic copying machine main body is started at this point. However, if desired, as in the case of original document 94, the third
It is also possible to start the copying process for the next document 94 by the electrostatic copying machine body in response to the output signal "H" generated by the output end 2 of the electrostatic copying machine.

(V) Processing of jammed originals; When the original jam occurrence signal as described above is generated, the main frame 12 is lifted from the working position to the non-working position, or the cover member 76 (see Fig. 3 , 5th rIIJ. 6th
7-A) to the open position, and if there is a jammed document, remove it. When the main frame l2 is lifted from the active position to the non-active position or when the lid member 76 is placed in the open position, the main frame position detector 254 enters the second state, that is, the closed state, and its output signal becomes " Thus, the document jam occurrence signal as described above is eliminated.

(VI) When placing the original on the transparent plate 8 manually; When positioning the original to be copied on the transparent plate 8 by manual operation without using the original feeding and ejecting device 4 (
For example, when the original to be copied is thick such as a book, or relatively rigid such as cardboard or a metal plate, the main frame 12 is placed in the non-active position as shown in FIG. As a result, the main frame body position detector 254 enters the second state, that is, the closed state, and its output signal becomes rHJ, and this signal "H" is supplied to the input terminal CL of the 7 flip-flop FFI, thereby causing the flip-flop FF1 is cleared. Then, the signal "L" is supplied to the NAND game }Nl from the output terminal Q of the flip-flop FF4 in the reset state, and the signal "L" is supplied from the output terminal of the OR gate 06.
'' is supplied, and therefore a signal ``H'' is generated at the output terminal of the NAND game }Nl, and this signal ``H'' is supplied to the input terminal D of the cleared flip-flop FFI.

Next, the document is manually positioned directly on the transparent plate 8 as desired, and the document holding mechanism 6 is brought into the operating position shown in FIG. Thereafter, a copying process start switch PS (FIGS. 1 and 2) provided in the electrostatic copying machine main body is pressed, thus starting the copying process by the electrostatic copying machine main body. Then, the main control means of the electrostatic copying machine main body generates a deactivation signal rl{J, and this signal rHJ is supplied to the manual terminal CP of the flip-flop FFI to set the flip-flop FFI. Therefore, the flip-flop FF
A signal "H" is output to the output terminal Q of I, and the lamp L3, which indicates the presence of a document manually placed on the transparent plate 8, is turned on. Prep Prop FFI
The signal rHJ generated at the output terminal Q of the agate 03
is also supplied to the input terminal CL of the flip-flop FF5 via the input terminal CL of the flip-flop FF5 to reset the flip-flop FF5, so that the solenoid 118 and the drive source are energized even if another document is manually positioned in the document feeding and ejecting device 4. It never happens. The lighted lamp L3 is turned off when the seven flip-flops FFI are reset by returning the main frame 12 to the operating position shown in FIG.

Although the example of the document feeding and ejecting device constructed according to the present invention has been described in detail above with reference to the accompanying drawings, the present invention is not limited to such specific example.
It is needless to say that various changes and modifications can be made without departing from the scope of the present invention.

[Brief explanation of the drawing]

FIG. 1 shows an electrostatic copying machine equipped with an original feeding and ejecting device constructed in accordance with the present invention, with the main frame of the original feeding and ejecting device positioned at the active position and the document holding mechanism at the non-active position. A slope view shown in a positioned state. FIG. 2 is similar to FIG. 1, showing the electrostatic copying machine shown in FIG. 1 with the main frame of the document feeding and ejecting device in the non-active position and the document holding mechanism in the working position. slope view. 31st! FIG. 1 is a cross-sectional view of the bulk supply and discharge device shown in FIG. 1; Figures 4 to 61! FIG. 1 is a partial perspective view showing a part of the document feeding and discharging device shown in FIG. 1; FIG. 7-A is a partial cross-sectional view of a portion of the bulk supply and discharge device shown in FIG. 1; Figure 7-B shows the state in which document feeding has started.
- Partial sectional view similar to figure A. FIG. 8 is a partial perspective view showing a part of the raw cargo feeding and discharging device shown in FIG. 1; FIG. 9 is a partially cutaway side view of the document feeding and discharging device shown in FIG. 1; FIG. 10-A is a partial cross-sectional view of a portion of the bulk delivery and discharge device shown in FIG. 1; FIG. 10-B is a partial sectional view similar to FIG. 10-A, showing a state in which the main frame is slightly lifted from the operating position. 1 is a simplified circuit diagram showing a control circuit for the document feeding and ejecting device shown in FIG. 1; FIG. 2...Copy machine housing 4...Document feeding and ejection device 6...Document holding mechanism 8...Transparent plate IO...Stationary support frame 12...Main frame 4 6 ・ 5 0 ・ 5 2 ・ 54 ・5 6 ・ 90 ・ 98 100 1 34 168 170 188 1 90 228 236 24 2 254 ・Document receiving surface・Document conveyance path・Main part of document conveyance path・Introduction part of document conveyance path・Curved lead-out part of document conveyance path・[Manuscript table/introduction conveyance roller pair...first document position regulating member...endless conveyance belt...second document position regulating member...press roller...upstream document lead-out roller...downstream document lead-out roller...・Operation amount detector・・First document detector・・Second document detector・・Main frame body position detector

Claims (1)

[Scope of Claims] 1. Centering on an axis extending along one side edge of a transparent plate disposed on the upper surface of the copying machine housing, there are an active position that covers the transparent plate and a non-active position that exposes the transparent plate. a main frame mounted so as to be rotatable between positions, and a main part defined between a lower surface of the main frame and the transparent plate when the main frame is positioned at the operating position; a document conveyance path having an introduction part located upstream of the main part and a curved lead-out part located downstream of the main part, and at least one document lead-out roller disposed on the main frame; A document feeding and ejecting device comprising: a document conveyance mechanism for conveying a document through the document conveyance path; The document transport mechanism is mounted to be movable between the working position and a retracted non-working position, and the document transport mechanism further elastically moves the document guiding roller to the working position when the main frame is in the working position. and a separating spring member that elastically biases the document guiding roller to the non-acting position when the main frame body is brought to the non-acting position. Feeding and discharging equipment. 2. When the main frame is in the operating position, one end of the spacing spring member is restrained by the upper surface of the copying machine housing, so that the elastic biasing action of the spacing spring member is transmitted to the document guide roller. When the main frame body is brought to the non-operating position, the one end of the spacing spring member is released from being restrained by the upper surface of the copying machine housing, and the elastic biasing action of the spacing spring member guides the document out. The document feeding and discharging device according to claim 1, wherein the document guiding roller is elastically biased to the non-acting position against the elastic biasing action of the pressing spring member. . 3. The document feeding and discharging device according to claim 1 or 2, wherein the curved lead-out portion extends from the main portion to a document receiving surface defined on the upper surface of the main frame. 4. The document conveyance mechanism includes at least one endless conveyance belt that is attached to the main frame and has an operative running portion that passes through the main portion of the document conveyance path and the document lead-out portion; 4. The document feeding and ejecting device according to claim 1, wherein the roller is brought into contact with or close to the surface of the endless conveyor belt in the operating position.